Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 2 - Solving Equations - Common Core Cumulative Standards Review - Selected Response - Page 159: 12

Answer

Graph $G$

Work Step by Step

To determine which graph corresponds with the given equation, $t=4c$, substitute different values of $c$ and solve for the corresponding value of $t$. The resulting set of ordered pairs $(c,t)$ are points on the graph of the given equation. Substituting $c=0$ in the given equation results in $$\begin{aligned} t&=4(0) \\&= 0 .\end{aligned} $$ Therefore, the point $(c,t)=(0,0)$ should be on the graph of the given equation. This makes Graph $H$ incorrect. Substituting $c=1$ in the given equation results in $$\begin{aligned} t&=4(1) \\&= 4 .\end{aligned} $$ Therefore, the point $(c,t)=(1,4)$ should be on the graph of the given equation. This makes Graph $I$ incorrect. Substituting $c=2$ in the given equation results in $$\begin{aligned} t&=4(2) \\&= 4 .\end{aligned} $$ Therefore, the point $(c,t)=(2,8)$ should be on the graph of the given equation. This makes Graph $F$ incorrect. Hence, the graph which correctly displays the relationship $t=4c$ is Graph $G$.
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